Paging method and paging apparatus for terminal

Abstract

This application provides a paging method and a paging apparatus for a terminal. A discontinuous reception cycle of the terminal in an inactive state is an extended discontinuous reception cycle, and the paging method is applied to an access network device. In the technical solutions provided in this application, first information from a core network element is received to determine an identity of a terminal, so as to determine a paging occasion for the terminal. After second information from the core network element is received, access network paging is performed for the terminal on the paging occasion for the terminal.

1 . A communication method, wherein a discontinuous reception cycle of the terminal in an inactive state is an extended discontinuous reception cycle, the method is applied to a first access network device side, and the method comprises:
 receiving first information, wherein the first information indicates an identity of the terminal, and the identity is used to determine a paging occasion for the terminal;   receiving second information, wherein the second information is used to request access network paging for the terminal; and   performing access network paging for the terminal on the paging occasion.   
     
     
         2 . The method according to  claim 1 , wherein receiving the second information comprises:
 receiving an N 2  message, wherein the N 2  message carries the second information, and the second information comprises an inactive radio network temporary identifier or an identifier that uniquely identifies a UE association over an NG interface within an access network device.   
     
     
         3 . The method according to  claim 1 , wherein receiving the first information comprises:
 receiving a first message, wherein the first message comprises an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request acknowledgment message, and the first message carries the first information.   
     
     
         4 . The method according to  claim 2 , wherein the N 2  message further carries the first information. 
     
     
         5 . The method according to  claim 3 , wherein the identity comprises a first identity index value of the terminal and/or a second identity index value of the terminal; wherein
 the first identity index value is an identity index value of the terminal in an eDRX cycle, and the second identity index value is an identity index value of the terminal obtained through a hash operation in the eDRX cycle.   
     
     
         6 . The method according to  claim 5 , wherein the first identity index value is used to determine a paging frame for the terminal and/or the paging occasion for the terminal. 
     
     
         7 . The method according to  claim 6 , wherein a length of the first identity index value is 12 bits, or a length of the first identity index value is 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity 5G-S-TMSI. 
     
     
         8 . The method according to  claim 5 , wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, the paging frame for the terminal, or the paging occasion for the terminal. 
     
     
         9 . The method according to  claim 8 , wherein the second identity index value is 13 most significant bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on 32 least significant bits of the 5G-S-TMSI according to a frame check sequence generation method. 
     
     
         10 . The method according to  claim 1 , wherein the method further comprises:
 sending the first information.   
     
     
         11 . A communication method, wherein a discontinuous reception cycle of the terminal in an inactive state is an extended discontinuous reception cycle, and the method comprises:
 sending first information, wherein the first information indicates an identity of the terminal, and the identity is used to determine a paging occasion for the terminal; and   sending second information, wherein the second information is used to request access network paging for the terminal.   
     
     
         12 . The method according to  claim 11 , wherein sending the second information comprises:
 sending an N 2  message, wherein the N 2  message carries the second information, and the second information comprises an inactive radio network temporary identifier or an identifier that uniquely identifies a UE association over an NG interface within an access network device.   
     
     
         13 . The method according to  claim 11 , wherein sending the first information comprises:
 sending a first message, wherein the first message comprises an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request acknowledgment message, and the first message carries the first information.   
     
     
         14 . The method according to  claim 12 , wherein the N 2  message further carries the first information. 
     
     
         15 . The method according to  claim 13 , wherein the identity comprises a first identity index value of the terminal and/or a second identity index value of the terminal; wherein the first identity index value is an identity index value of the terminal in an eDRX cycle, and the second identity index value is an identity index value of the terminal obtained through a hash operation in the eDRX cycle. 
     
     
         16 . The method according to  claim 15 , wherein the first identity index value is used to determine a paging frame for the terminal and/or the paging occasion for the terminal. 
     
     
         17 . The method according to  claim 16 , wherein a length of the first identity index value is 12 bits, or a length of the first identity index value is 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity 5G-S-TMSI. 
     
     
         18 . The method according to  claim 15 , wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, the paging frame for the terminal, or the paging occasion for the terminal. 
     
     
         19 . The method according to  claim 18 , wherein the second identity index value is 13 most significant bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on 32 least significant bits of the 5G-S-TMSI according to a frame check sequence generation method. 
     
     
         20 . An apparatus, wherein the apparatus is a terminal or a chip of the terminal, comprising:
 a memory storing instructions; and   at least one processor in communication with the memory, the at least one processor configured, upon execution of the instructions, to perform the following steps:
 receiving first information, wherein the first information indicates an identity of the terminal, and the identity is used to determine a paging occasion for the terminal; 
 receiving second information, wherein the second information is used to request access network paging for the terminal; and 
 performing access network paging for the terminal on the paging occasion. 
   
     
     
         21 . The apparatus according to  claim 20 , wherein receiving the second information comprises:
 receiving an N 2  message, wherein the N 2  message carries the second information, and the second information comprises an inactive radio network temporary identifier or an identifier that uniquely identifies a UE association over an NG interface within an access network device.   
     
     
         22 . The apparatus according to  claim 20 , wherein receiving the first information comprises:
 receiving a first message, wherein the first message comprises an initial context setup request message, a terminal device context modification request message, a handover request message, or a path switch request acknowledgment message, and the first message carries the first information.   
     
     
         23 . The apparatus according to  claim 21 , wherein the N 2  message further carries the first information. 
     
     
         24 . The apparatus according to  claim 22 , wherein the identity comprises a first identity index value of the terminal and/or a second identity index value of the terminal; wherein
 the first identity index value is an identity index value of the terminal in an eDRX cycle, and the second identity index value is an identity index value of the terminal obtained through a hash operation in the eDRX cycle.   
     
     
         25 . The apparatus according to  claim 24 , wherein the first identity index value is used to determine a paging frame for the terminal and/or the paging occasion for the terminal. 
     
     
         26 . The apparatus according to  claim 25 , wherein a length of the first identity index value is 12 bits, or a length of the first identity index value is 16 bits, and the first identity index value is determined by a 5th generation system temporary mobile subscriber identity 5G-S-TMSI. 
     
     
         27 . The apparatus according to  claim 24 , wherein the second identity index value is used to determine at least one of the following information: a paging hyperframe for the terminal, a frame number corresponding to a start position of a paging time window for the terminal, the paging frame for the terminal, or the paging occasion for the terminal. 
     
     
         28 . The apparatus according to  claim 27 , wherein the second identity index value is 13 most significant bits of a hashed identifier, and the hashed identifier is a frame check sequence obtained by performing an operation on 32 least significant bits of the 5G-S-TMSI according to a frame check sequence generation method.